Multifunction alternator testing device

• US 5,550,485 A
• Filed: 01/26/1995
• Issued: 08/27/1996
• Est. Priority Date: 06/04/1993
• Status: Expired due to Fees

• Current Assignee: Dean A. Falk
• Original Assignee: Dean A. Falk
• Inventors: Falk, Dean A.
• Primary Examiner(s): Wieder, Kenneth A.
• Assistant Examiner(s): WARDAS, MARK A
• Application Number:
  US08/378,910
• Time in Patent Office: 579 Days
• Field of Search: 324/772, 324/767, 324/158.1, 322/99
• US Class Current: 324/765.01
• CPC Class Codes: G01R 31/343 in operation

Abstract

An alternator testing device has a frame to which is secured an adjustable bracket for mounting an alternator. A housing, which is also secured to the frame includes a control panel and a testing circuit. The control panel permits the operator to configure the circuit to perform a series of tests to determine whether the alternator is functioning properly. These tests are conducted in a manner which replicates the operation of the alternator in a motor vehicle, rather than in a simulation.

Claims

1. A device capable of testing a variety of motor vehicle alternators for testing a single alternator under conditions identical to conditions encountered in a motor vehicle when the alternator is in use in the motor vehicle, said device comprising:

(a) a frame;

(b) an alternator mounting bracket attached to said frame; and

(c) an operator-controlled circuit proximate said alternator mounting bracket for selective alternator testing, said testing circuit comprising;

(1) a power supply;

(2) a motor;

(3) a first subcircuit for directly measuring and displaying any alternator reverse current leakage;

(4) a second subcircuit for measuring and displaying alternator charging voltage output;

(5) a third subcircuit for measuring and displaying maximum alternator current output;

(6) a fourth subcircuit for detecting and indicating alternator diode and stator imbalance; and

(7) an operator-controlled switch array for selecting which of said subcircuits is in use.

2. The device of claim 1 wherein said alternator mounting bracket comprises:

(a) an L-shaped brace;

(b) first and second mounting pins slidable on said brace;

(c) a belt;

(d) a belt guard; and

(e) means for selectively increasing and decreasing tension of said belt when it is operatively connected to said alternator.

3. The device of claim 1 wherein said operator-controlled circuit for selective alternator testing includes a voltage selection switch for configuring said device to test an alternator rated at a preselected voltage output.

4. The device of claim 1 wherein said power supply includes a battery unit.

5. The device of claim 4 wherein said battery unit comprises a plurality of batteries and means for recharging said batteries using standard household electrical service.

6. The device of claim 1 wherein said operator-controlled switch array comprises:

(a) a first switch permitting the operator to select a preselected alternator voltage rating;

(b) a second switch permitting the operator to turn on said operator-controlled circuit for selective alternator testing;

(c) a third switch permitting the operator to selectively perform alternator remagnetization and alternator reverse current leakage measurement and display;

(d) a fourth switch permitting the operator to test alternator charging voltage output and alternator maximum current output; and

(e) a fifth switch permitting the operator to turn said motor on and off.

7. The device of claim 1 wherein said device is capable of testing alternators rated at 12 volts and 24 volts.

8. The device of claim 1 wherein said device is capable of testing alternators rated in the range of approximately 45 amps to 200 amps.

9. A device capable of testing a variety of motor vehicle alternators for testing a single alternator under conditions identical to conditions encountered in a motor vehicle when the alternator is in use in the motor vehicle, said device comprising:

(a) a frame;

(b) an alternator mounting bracket attached to said frame; and

(c) an operator-controlled testing circuit proximate said alternator mounting bracket for selective alternator testing, said testing circuit comprising;

(1) a power supply;

(2) a motor;

(3) a first unit for directly measuring and displaying any alternator reverse current leakage;

(4) a second unit for measuring and displaying alternator charging voltage output;

(5) a third unit for measuring and displaying maximum alternator current output; and

(6) a fourth unit for detecting and indicating alternator diode and stator imbalance;

(7) an operator-controlled switch array for selecting which of said units is in use.

10. The device of claim 9 wherein said power supply comprises a plurality of batteries and an operator-controlled battery recharging circuit using standard household electrical service.

11. The device of claim 10 wherein said device further comprises an alternator remagnetization circuit.

12. The device of claim 11 wherein said device further comprises an alternator remagnetization circuit.

13. The device of claim 12 wherein said device further comprises an operator-controlled switch for configuring said device for alternator testing at a preselected voltage rating.

14. The device of claim 13 wherein said device is capable of selectively testing alternators in the range of 45 amps to 200 amps and further is capable of selectively testing alternators rated 12 volts and 24 volts.

15. A device capable of testing a variety of motor vehicle alternators for testing a single alternator under conditions identical to conditions encountered in a motor vehicle when the alternator is in use in the motor vehicle, said device comprising:

(a) a frame;

(b) an alternator mounting bracket attached to said frame, wherein said alternator mounting bracket comprises;

(1) an L-shaped brace;

(2) first and second mounting pins slidable on said brace;

(3) a belt;

(4) a belt guard; and

(5) means for selectively increasing and decreasing tension of said belt when it is operatively connected to said alternator; and

(c) an operator-controlled circuit proximate said alternator mounting bracket for selective alternator testing, said testing circuit comprising;

(1) a power supply comprising a plurality of batteries and means for recharging said batteries using standard household electrical service;

(2) a voltage selection switch for configuring said device to test an alternator rated at a preselected voltage output;

(3) a motor;

(4) a first subcircuit for directly measuring and displaying any alternator reverse current leakage;

(5) a second subcircuit for measuring and displaying alternator charging voltage output;

(6) a third subcircuit for measuring and displaying maximum alternator current output;

(7) a fourth subcircuit for detecting and indicating alternator diode and stator imbalance; and

(8) an operator-controlled switch array for selecting which of said subcircuits is in use

(9) a first switch permitting the operator to select a preselected alternator voltage rating;

(10) a second switch permitting the operator to turn on said operator-controlled circuit for selective alternator testing;

(11) a third switch permitting the operator to selectively perform alternator remagnetization and alternator reverse current leakage measurement and display;

(12) a fourth switch permitting the operator to test alternator charging voltage output and alternator maximum current output; and

(13) a fifth switch permitting the operator to turn said motor on and off.

16. The device of claim 15 wherein said device is capable of testing alternators rated at 12 volts and 24 volts.

17. The device of claim 15 wherein said device is capable of testing alternators rated in the range of approximately 45 amps to 200 amps.